Dust-guard for car-axle boxes.



H. G. GAMAGE.

DUST GUARD FOR CAB AXLE BOXES. nrmcuxox funn Dnc. n, 100s.

Patented Apr. 20, 1909.

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911 8,528. Patented Apr. 20, 1909.

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UNITED STATES `ATFNT FFCE.

HARRY C. GAMAGE, OF NEW YORK, N. Y., ASSIGNOR TO D. P. COMPANY, A CORPORATION OF NEW JERSEY.

DUST-GUARD FOR GAR-AXLE BOXES.

Specification of Letters Patent.

Patented April 20, 1909.

Application led December 11, 1908. Serial No. 466,953.

To all whom it may concern: y

Be it known-that I, HARRY C. Garnica, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a certain new and useful Improvement in Dust-Guards for Oar-Axle Boxes, of which the following is a speciiication.

The invention is a device for preventing the entrance of dust into car axle journal boxes and consists, first, in a dust guard conn prising two oppositely disposed elastic metal plates having openings for the reception of an axle, the said plates being connected only at points near their edges and having their opposing faces elsewhere at a distance apart; also in the combination of the said guard with the car axle box, as hereinafter more particularly pointed out in the claim.

In the accompanying diawings-iligure 1 is a vertical section of a car axle journal box, showing iny device in place. Fig. 2 is a transverse section on the line af, a', of Fig. 1. Figs. 3 and 4 respectively show in perspective the plates which are bolted. together at their corners to form the dust guard, and

Fig. 5 is an edge view of the dust guard separately and removed from the journal box.

Similar characters of reference indicate like parts.

The journal box 1 is of the usual standard forni, provided with a chamber 2 between its rear walls 3 and 4. in said walls are openings 5, 6, through which the car axle 7 passes, l

the said openings being larger in diameter than the portion of the axle received in them.

8 and 9, Figs. 3 and 4, are plates of sheet metal, preferably steel, having openings 10 provided with circumferential llanges 11. The plates 8, 9 are rectangular in forni. Each corner of each plate is Ylirst bent or inclined, as shown at 12, and then turned into a plane substantially parallel to the plane of the main body of the plate, as shown at 13. The two plates 8, 9 are then placed together with their corner portions 13 abutting, as shown in Fig. 5, and are united into a single structure by rivets or bolts 14 passing through said corner portions 13. In this way, a space 15 is formed between the separated inner faces of the plates 8, 9, to which access may be had through the opening between the plate edges. The plates 8, 9 being thus united form the dust guard A which is introduced into the chamber 2 in the axle journal box. Before the said dust guard is inserted, a quantity of packing 16 is placed in the bottoni of the chamber 2,' and upon this packing the lower edge 17 of the dust guard A rests, so that said packing forms an elastic supporting cushion for said dust guard. A quantity of packing 'may also be iirst put in position between the plates S and 9.

The axle 7 passes through the registering openings 10 with a loose ht, so that the actual weight oi the dust guard A is borne b v the supporting packing 16 and not by the axle, and in this way, possible wear of the axle due to the supcrineuinbent weight of the dust guard is prevented. More packing is then inserted through the upper opening between the plates 8, 9 until the space between the plates, and also the chamber 2, is iilled, as shown in Fig. 2. Plates 8, 9 are elasticalljT comprcssible toward one another so that their outer faces bear resiliently against the walls ofthe chamber 2, and their pressure may be reinforced by constructin said plates somewhat convex at their middle portions, as shown at 1S, Fig. 5.

When the axle is moved transversely in the openings 5, 6 of the journal box, the dust guard A as a whole inoves with the axle. Conversely, if the journal box is moved transversely with respect to the axle, the .valls of the box slide upon the outer faces of the dust guard A. ln either case, a tight joint is maintained between the box walls and the dust guard which elfectually prevents the entrance of dust through the openings 5, 6 and into the interior of the box.

l claim:

ln a dust guard for car axle boxes, tiro oppositely disposed quadrangular inetal plates having openings for the reception of an axle, the said plates being bent toward one another and rigidly coniiected at their corners, and having their opposing faces elsewhere at a distance apart.

ln testimony whereof l have aflixed my signature in presence of two witnesses.

HARRY C. GAMAGE.

Vlfitnesses GERTRUDE T. PORTER, MARY T. MOGARRY. 

